223979 has 8 divisors (see below), whose sum is σ = 261600. Its totient is φ = 191688.

The previous prime is 223969. The next prime is 223999. The reversal of 223979 is 979322.

It is not a de Polignac number, because 223979 - 2⁴ = 223963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17 + ... + 669.

It is an arithmetic number, because the mean of its divisors is an integer number (32700).

2²²³⁹⁷⁹ is an apocalyptic number.

223979 is a deficient number, since it is larger than the sum of its proper divisors (37621).

223979 is an frugal number, since it uses more digits than its factorization.

223979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674 (or 660 counting only the distinct ones).

The product of its digits is 6804, while the sum is 32.

The square root of 223979 is about 473.2641968288. The cubic root of 223979 is about 60.7298815101.

The spelling of 223979 in words is "two hundred twenty-three thousand, nine hundred seventy-nine".